package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {


    @Autowired
    private DishFlavorService dishFlavorService;
    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        this.save(dishDto);

        Long dishId = dishDto.getId();

        List<DishFlavor> flavors = dishDto.getFlavors();

       flavors= flavors.stream().map((item)->{
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());


        dishFlavorService.saveBatch(flavors);


    }

    @Override
    public DishDto byIdWithFlavor(Long ids) {

        Dish dish = this.getById(ids);
        DishDto dishDto=new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        LambdaQueryWrapper<DishFlavor> lqw=new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors= dishFlavorService.list(lqw);
        dishDto.setFlavors(flavors);


        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        this.updateById(dishDto);

        LambdaQueryWrapper<DishFlavor> lqw=new LambdaQueryWrapper<>();
        lqw.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(lqw);

        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors= flavors.stream().map((item)->{
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);


    }

    @Transactional
    @Override
    public void deleteWithFlavor(List<Long> ids) {
        LambdaQueryWrapper<Dish> lqw=new LambdaQueryWrapper<>();
        lqw.in(Dish::getId,ids);
        lqw.eq(Dish::getStatus,1);

        int count = this.count(lqw);

        if (count>0)
        {
            throw new CustomException("菜品正在售卖，不能删除");
        }

        this.removeByIds(ids);

        LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.in(DishFlavor::getDishId,ids);

        dishFlavorService.remove(lambdaQueryWrapper);


    }
}
